The thing with both GPL and CDDL is that they both put restrictions on how you are allowed to distribute the program/source. i.e. you can't legally distribute c

The thing with both GPL and CDDL is that they both put restrictions on how you are allowed to distribute the program/source. i.e. you can't legally distribute code that has both GPL and CDDL parts. However, neither license puts restrictions on (end-user) use, which means that as long as you distribute the bits separately, running them together is perfectly fine. Which means (as their FAQ states) that while it can't ship as part of the kernel, there's no reason end-users wouldn't be allowed to load a separately distributed module into their kernel.